[INFO] updating cached repository Charles-Johnson/zia
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Charles-Johnson/zia
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Charles-Johnson/zia" "work/ex/beta-1.38-1/sources/1.37.0/gh/Charles-Johnson/zia"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Charles-Johnson/zia'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Charles-Johnson/zia" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Charles-Johnson/zia"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Charles-Johnson/zia'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 27df02008cf064f8857b5c6e646519f306307ea9
[INFO] sha for GitHub repo Charles-Johnson/zia: 27df02008cf064f8857b5c6e646519f306307ea9
[INFO] validating manifest of Charles-Johnson/zia on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Charles-Johnson/zia on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Charles-Johnson/zia
[INFO] finished frobbing Charles-Johnson/zia
[INFO] frobbed toml for Charles-Johnson/zia written to work/ex/beta-1.38-1/sources/1.37.0/gh/Charles-Johnson/zia/Cargo.toml
[INFO] started frobbing Charles-Johnson/zia
[INFO] finished frobbing Charles-Johnson/zia
[INFO] frobbed toml for Charles-Johnson/zia written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Charles-Johnson/zia/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Charles-Johnson/zia against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Charles-Johnson/zia:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 29c49f2fa2f07fdefc66f5c2d808f2617a79a7501a25adf0969bd293bc94f07f
[INFO] running `"docker" "start" "-a" "29c49f2fa2f07fdefc66f5c2d808f2617a79a7501a25adf0969bd293bc94f07f"`
[INFO] [stderr]    Compiling zia v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/adding.rs:120:25
[INFO] [stderr]     |
[INFO] [stderr] 120 |                     let mut leftc = try!(self.concept_from_ast(left));
[INFO] [stderr]     |                         ----^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/adding.rs:121:25
[INFO] [stderr]     |
[INFO] [stderr] 121 |                     let mut rightc = try!(self.concept_from_ast(right));
[INFO] [stderr]     |                         ----^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `"docker" "inspect" "29c49f2fa2f07fdefc66f5c2d808f2617a79a7501a25adf0969bd293bc94f07f"`
[INFO] running `"docker" "rm" "-f" "29c49f2fa2f07fdefc66f5c2d808f2617a79a7501a25adf0969bd293bc94f07f"`
[INFO] [stdout] 29c49f2fa2f07fdefc66f5c2d808f2617a79a7501a25adf0969bd293bc94f07f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Charles-Johnson/zia:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] b948de6e6142013c2502bdb8560b1c35b14da3b8971fc04b51ae0319eef63175
[INFO] running `"docker" "start" "-a" "b948de6e6142013c2502bdb8560b1c35b14da3b8971fc04b51ae0319eef63175"`
[INFO] [stderr]    Compiling zia v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/adding.rs:120:25
[INFO] [stderr]     |
[INFO] [stderr] 120 |                     let mut leftc = try!(self.concept_from_ast(left));
[INFO] [stderr]     |                         ----^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/adding.rs:121:25
[INFO] [stderr]     |
[INFO] [stderr] 121 |                     let mut rightc = try!(self.concept_from_ast(right));
[INFO] [stderr]     |                         ----^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.59s
[INFO] running `"docker" "inspect" "b948de6e6142013c2502bdb8560b1c35b14da3b8971fc04b51ae0319eef63175"`
[INFO] running `"docker" "rm" "-f" "b948de6e6142013c2502bdb8560b1c35b14da3b8971fc04b51ae0319eef63175"`
[INFO] [stdout] b948de6e6142013c2502bdb8560b1c35b14da3b8971fc04b51ae0319eef63175
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Charles-Johnson/zia:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 5dcee407d6459c2c70576908ebedb3b36eced846a3e61303a1b918ddbcef4aff
[INFO] running `"docker" "start" "-a" "5dcee407d6459c2c70576908ebedb3b36eced846a3e61303a1b918ddbcef4aff"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/zia-595379b355ee76c7
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test translating::tokens::lambda ... ok
[INFO] [stdout] test translating::tokens::triplet ... ok
[INFO] [stdout] test translating::tokens::pair ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/definitions-3928c5f3ec695bd9
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test defining_used_symbol_as_used_pair ... ok
[INFO] [stdout] test definition_loop ... ok
[INFO] [stdout] test fresh_nested_pairs ... ok
[INFO] [stdout] test fresh_pair ... ok
[INFO] [stdout] test chained_definitions_loop ... ok
[INFO] [stdout] test defining_fresh_symbol_as_used_pair ... ok
[INFO] [stdout] test defining_used_symbol_as_fresh_pair ... ok
[INFO] [stdout] test bad_refactor ... ok
[INFO] [stdout] test refactor ... ok
[INFO] [stdout] test redundantly_remove_definition ... ok
[INFO] [stdout] test redundancy ... ok
[INFO] [stdout] test pair_on_the_left ... ok
[INFO] [stdout] test fresh_symbol ... ok
[INFO] [stdout] test nested_definition_loop ... ok
[INFO] [stdout] test fresh_refactor ... ok
[INFO] [stdout] test remove_definition ... ok
[INFO] [stdout] test setting_definition_of_concrete ... ok
[INFO] [stdout] test old_pair ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/definitions_and_reductions-9d3ee8aee496e4ae
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test reducing_nested_definition ... ok
[INFO] [stdout] test sneeky_infinite_reduction_chain ... ok
[INFO] [stdout] test indirect_reduction ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/program_recognition-f2305c31e26cd5fb
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test symbol_whose_definition_is_a_program_is_a_program ... ok
[INFO] [stdout] test fresh_symbol_is_not_a_program ... ok
[INFO] [stdout] test fresh_pair_is_not_a_program ... ok
[INFO] [stdout] test fresh_nested_pair_is_not_a_program ... ok
[INFO] [stdout] test symbol_whose_normal_form_is_a_program ... ok
[INFO] [stdout] test symbol_whose_normal_form_is_a_builtin_concept ... ok
[INFO] [stdout] test used_symbol_is_not_a_program ... ok
[INFO] [stdout] test used_symbol_in_a_nested_pair_is_not_a_program ... ok
[INFO] [stdout] test used_symbol_in_a_pair_is_not_a_program ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/reductions-28d99096d078ebb4
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test chain ... ok
[INFO] [stdout] test broken_middle_chain ... ok
[INFO] [stdout] test cycle ... ok
[INFO] [stdout] test change_reduction_rule ... ok
[INFO] [stdout] test broken_end_chain ... ok
[INFO] [stdout] test infinite_expansion ... ok
[INFO] [stdout] test leapfrog_reduction_rule ... ok
[INFO] [stdout] test nested_pairs_to_symbol ... ok
[INFO] [stdout] test reducing_concrete ... ok
[INFO] [stdout] test redundancy ... ok
[INFO] [stdout] test remove_reduction ... ok
[INFO] [stdout] test symbol_to_symbol ... ok
[INFO] [stdout] test pair_to_symbol ... ok
[INFO] [stdout] test trivial_parentheses ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/syntax-f67b03982950e13b
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test ambiguous_expression ... ok
[INFO] [stdout] test empty_parentheses ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests zia
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "5dcee407d6459c2c70576908ebedb3b36eced846a3e61303a1b918ddbcef4aff"`
[INFO] running `"docker" "rm" "-f" "5dcee407d6459c2c70576908ebedb3b36eced846a3e61303a1b918ddbcef4aff"`
[INFO] [stdout] 5dcee407d6459c2c70576908ebedb3b36eced846a3e61303a1b918ddbcef4aff